8GB KIT (2 x 4GB) For Panasonic Toughbook 19 Mk4 CF-19R 19 S T V 31 Mk1 CF-31 Core i3 i5 52 Mk3 CF-52. SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand.<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>8GB KIT (2 x 4GB) SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory</li><li>Genuine A-Tech Memory</li><li>Lifetime Warranty</li><li>Toll Free Technical Support 1-866-557-4527</li><li>Designed For Panasonic Toughbook. (See Compatibility List Below)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51PzGgOSgVL.jpg" noproxy>